The deubiquitinating enzyme Usp5 regulates Notch and RTK signaling during Drosophila eye development
- PMID: 28140449
- DOI: 10.1002/1873-3468.12580
The deubiquitinating enzyme Usp5 regulates Notch and RTK signaling during Drosophila eye development
Abstract
Usp5 belongs to the USP family of deubiquitinating enzymes (DUBs), which comprises the largest class of DUBs. We previously reported that loss of Usp5 impairs development of photoreceptors in Drosophila eyes, although the detailed mechanism remained unclear. In the present study, we demonstrate that Usp5 regulates both Notch and receptor tyrosine kinase (RTK) signaling. Loss of Usp5 results in upregulation of Notch signaling and downregulation of RTK signaling, leading to impaired photoreceptor development. Moreover, genetic rescue experiments with the DNA binding protein Suppressor of Hairless or Notch RNAi indicate that they mediate the regulation of RTK signaling by Usp5. The present study provides mechanistic insight into how Usp5 regulates photoreceptor differentiation by Notch and RTK signaling in the Drosophila eye.
Keywords: EGFR; RTK; Notch; Su(H); Yan; deubiquitinating enzymes; photoreceptors.
© 2017 Federation of European Biochemical Societies.
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